Load-equalizer for generators.



S. D. SPRONG.

PATENTED JUNE 11 199?.

LOAD EQUALIZER FOR GENERATORS.

APPLICATION FILED IAB. 26, 1906.

3 SHEBTS8HBET 1.

WITNESSES:

INVENTOR 310.856.1 41. PATENTED JUNE 11, 1907.

S.D.SPRONG.

L'OAD EQUALIZER FOR GENERATORS.

APPLICATION FILED [A126, 1900. 3 SHEETS-SHEET 2,

. BY 5 W Q [d V VQ Q /ATTORNEY PATENTED JUNE 11, 190?. s. D. SPRONG.

LOAD EQUALIZER FOR GENERATORS.

APPLICATION FILED MAR.26,1966.

3 SHEETS-SHEET 3,

MFLY yw on c o n esa'm.

UNITED S AZ TES.

rArrENT OFFICE;

SEVERE D. sPRoNdor BROOKLYNIINEW YORK, ASSIGNOR or ONE-HALF TO METROPOLITAN-ENGINEERING COMPANY.

ZLOAD-EQUAILIZER. FOR GENERATORS. V

'A pplication filed March 26,

2 all'uihom it coricer'n:

- Be known that I, SEVERND. SPRQNG, a [citizen of the United States,' residing atthe-county ofKings and State .g of New-York, have invented a eertain' a 'tornatically a uniform distribution of load ween generating crating in'par- A nits (31p 81 cl, oranypredetermine distributionof' 'lgad. among saidunitsi The principle of the invention isto utilize the difierenig 'lueto abnormal load on any 1 one unit, asic'ompared with the .averageload "(man the others, inorder to' actuate means for bringing'the abnormal'load back to nor "are combined a plurality 0 mal. One embodiment of this principle is hereinafterset forth in ana paratus wherein generating units and means controlled by the establishment of adifierential between the average load on each of said units, and'the actual load on one a l indicate like parts. 4 v

of them, for causing said last named unit to assume its distributive share or some predetermined share of the'whole'load. A a .Intl'ie accompanying drawings-Figure 1v is an elevation of my ap aratus.- Fig. Z is a vertical section on the e z; m. 'of a Big. 1. 3 is a plan view and Fig. 4 is an iflarge'd detail view showing the device for ifiiichanically connecting two or more of the levers 6. Fig. 5 illustrates diagranunatically one device through whichin my presentapparatus, a dynamo may be regulated by its associated motor.

'. Similar numbers and letters of. reference;

- Upon the base l are two solenoids A, B, connected in series with the three phase gencrating unit C. The dbre 2 of solenoid A is supported upon one arm of a lever 3 pivoted in standard i. The core 5 'of solenoid B is supported upon one arm of a lever 6, pivoted in standard '7. The oppositearm of lever 6 has a yoke 8, in the arms of which are'contact screws :9 and 10. The opposite arm 1 1 of lever Sextends between said screws 9 and 10.

The parts so far. described are associated; as statediwith generating unit 0, which is one of the units operating ill-parallel. A similar a paratus is associated withevery other unit.

- Specification of Letters Patent.

sliding of the rods in bloc position of the levers'fi, and hence of the con- Patented June 11. 1907 1906. Serial No. 308,020.

control pivoted levers'and contacts, the

are supports 12, and in the scveral supports I2 is journaled a rock shaft 1.3,from whih extend fixed arms 1'4. At the end of each rod '15 which is received in a block- 1-6, pivotmeans of the screw 17 r The lever arms 11 form circuit terminals and are all connected to one conductor of the main or bus bar ISJThe contact screws 9 and 10 are also circuit terminals and are respectively connected through the reversely wound field coils 19, 20, and armature of a motor 21, to, the othercomluctor of said main or bus bar.

The solenoids A, B, D, E, etc., are all exactly similar. Hence, if any pair as A, B, be considered separately, (the screw 17 being released) it is obvious, that While the contact screws 9 and 10 on lever 6 and the endll of lever 3 will move as the load varies 'their relative position will remain the same; and so long as the load on A and B remains unchangeil said parts will not make electrical contact. li,rl owever, all of the clamping screws '17 are tightened, thus )reventing airy ifiS-lti, then the tact screws carried thereby, will be controlled, not by the load of any. one unit C, F, etc., but by the-average load on all of the units,.and the position of said levers 6, and hence of said screws, will depend upon'said average load. It the load on each unit equals its share of the whole load, then the circuit terminal or end 11 oteach lever 3 will maintain its relative positie'n with respect to its associatedeontact screws 9 and 10 and make contact with neither. Butif the load ;on any one unit becomes either greater or less hus, as shown in Fig. 3,-the solenoids D, E,

11 of lever 3 associated with that unit will same as already described, and are connected In series w1th generating unit F. The dotted c rcles G and H indicate solenoids connected Extending upwardi'rom each standard 7 'ed, as shown in Fig. 4, in a slot in the lever 6. The rod'may be clamped in block' 16 by,

arm 14 is pivoted/la downwardly depending than its share of the .whole load, then the end move with respect-toconta'ct screws Bl-and y in the opposite direction; and carr 'ng a;

10, to close circuit with-one screw or the other',.with the result that the motor associated therewith receives current from main 18 to cause it to rotate in one direction or the other. The motor may then control in any suitable'way that unit until it again takes care of its pro er share, or some predetermined share, of the load.

; io' It will be observed that the armatures' of magnets ALDYG. are not mechanically connected and that each of said magnets is free tomov'e its armature and hence the lever 11 I controlled thereby in accordance with the 1 5 load on itself. ,If this load coincides with the average load which has set lever 6 in posi- :tion,.- then the end of lever 11 will not make contact with either terminal 9 or 10 carried by 6.. But su pose the'l oad on any dynamo is. in excess 0 the average: Then tliemagnet A D or G, controlled by that particular I 'dynamo displace its lever 11 to make contact .one of the two terminals carried by its opposite lever 6 and circuit will be es- .2'5 tablis'hed through the motor to effect proper regulation. .The point to be noted is that while themagnets B.F. H are mechanically connected, the magnetsA D G are-not.

.- Hence adifierential'is produced between the result of all the ma 'nets B F H acting separately; And this erential regulates the dynamo controlling the particular magnet A -D or G. One wa' ofeffecting this motor con trol is illustrate in Fig. 5.

3 arepresents an engine, which actuates the dynajnio C. The engine valves at b, may be controlled by the linli 0, connected to the piv-.

. 'otcdjarm d, which is connected in the usual way to theflsleeve e of a ball governor f. And 4 the governorfin any suitable manner (not shownlis driven by the engine. Connected j bylink g tothe free endof arm-d is a shaft it having a rounded head p, K'voted at i to any fixed sup ort'j upon "whic support the field I45, coils 19 o the motor are fixed.

" -21 is the motor armature fast upona threaded sleeve k, the end of which may bear against-a collar'l fixed on shaft h. a On sleeve is is a nut mha'vi'ng'a sleeve n which as the.

5.0 nutfinoves travels on'a fixed guide bar 0. In this way rotation of the not on the sleeve k is revented. [As the motor armature-rotates in one direction or the other, the sleeve is rorates with itand hence the nut m is caused to I 5 move, in one direction or the other along said -sleeve 1c,- thus varying, through the linkage, thc amount of Wei ht .actiri' upon the gov- (011101 sleeve e, an hence tie effect ofthe governor upon the engine valves to vary the engine 'speedfand' thus the s eed of rotation of the armature of, dynamo v Connected toathe lever 3 are two inclined v guide arms'fll, ca g a weight 23, which may be adjusted byt e screw 24.. Connected 6 5 to lovers 6 arcsiuular guide arms 25, inclined weight 26,-which may be adjusted y the screw 27'. By ad'usting the weights 23 and 26 the cores 2 an ,5 maybe balanced, or by the samemeansl 'maychange at will the 7b share of the load which any unit may assume.

By shifting the weights so a to exert greater or less average, a gre; arm load will-be maintained-on the associated unit, and in this way said unit may be over or under-loaded at udll. y The rods 15 are clamped by screws 17 at points equidistant from their pivot connec tions to arms 14. If a unit is out of service,

its associated apparatus is mechanically disconnected from that belonging .to the other units byreleasing the screw 17,.thus leaving the rod 15 to play freely up and down in its block 16.

I claim: 1. A' plurality of generating units and means controlled by .the establishment of a differential between the average load on each of said units and the actual load on any one of them, for causing-said last named 'unit'to as no .suine it's distributive share of the whole load.

2. A plurality of cnerating units and nieans contr'olled by-t e establishment of a differential between theaverage load on each of said units and the actual loaduin any one. 5 of them, for causing said last named 'unit to assume a predetermined share of the wh load.

3. A plurality of enerating units and means controlled by tie establishment of a we diii'erential between the average load on each of a'number of said units less. than the whole and the actual load on any one, of them, for

causing said last named unit to assume its distributive share of the load on said number 1 c5 ofunits. l v I 4: A plurality ofene'rating units and' means controlled by tie establishment of-a differential between the average load on each of'e number of said units less than thewhole 1 10 and the actual load on any one of them, for causing said last named unit to assume a predetermined sh'areof the load on said number of units.

5. A pluralityiof" generating gun its, movable circuit terminalsassociated'with each unit, a pluralityof electrically 'operated' devices respectively controlling said unitsand respectively in circuit with said .terminals, and means controlled by the establishment of a differential between the average load on each of said'units and the actual load'or'i "any.

one of them, for moving into-contact the-ten minals associated withsaid .unit and thereby closing circuit to the electrically operated 1 2 5 device in ,circuitwith said last named ter.

minals. a

6. A plurality of generating units, relatively movable circuit terminals associated with each unit, means for initially adjusting i 30 i l elinite position, a plurality of separate 1nov. able circuit terminals ouch assocb the initial position of the and members of each pair of circuit terminals, a plurelity of electrically operated devices respectively controlling said units and respectively in circuit with said terminals, and means controlled by the estcblishment differential between the average load oneech of said units and the actual load on one of them for moving into contact the terminals associated with said unit and thereby closing circuit to the electrically operated device in circuit with said last named terminals.

7. A plurality of generating units, mo vaole circuit terminals associated with each unit, a plurality of motors respectively ontrolling said units end respectively in ouit with said terminals and means controlled the establishment of e differential 1.; tween the average load on eech'o; units and the sctuel locd on any one of them, for moving into contact the terminals associated with seed unit and thereby closing circuit to the motor in circuit fwith'seid last named terminails,

8. A plurality of generating units, it plurelity of movable mechanically connected circuitterminels actuated by ssid units, it plurelity of independent movable circuit terini nails each actuated by one of said units and such in proximity to one of said first named tegininnls and means in circuit w nch p air of approximated terminalsitorcon unit associated with said pair I l 9. A plurality of um i w ity of movable on ,it simulteneously actuated by all of set-ice unite totalre ted v; I one vof SilKl units and actuated mere y,

each disposed in proxin ity one of sci-J.

first named terminals and e plurality of electricztlly operated devices each in circuit with one of said first named terminals end one of said separate terminals, and each constructed to control the unit associated with so l separate terminal.

19, In combinetion with each unit of o. pluity of generating units, two sole; its in ries circuit with said unit, :1. lllOYfllO circuit terminal ectueted one of said solenoids, movable circuit terminal actuated by the other solenoid and disposed in proximi y to said first terminal, a motor in circuit with said terminals and controlling said unit and means for mechanically connectiny the several circuit terminals actuated by one set of corresponding solenoids of dill'erent pairs ll. in combinetionwith each unit of a plusl ty of generating units, two solenoids in -es circuit with said unit, c inmmble circuit erminel actuated by one of said solenoids, c movcblc circuit terminal actuated by the other solenoid and disposed in proximity to d l a less their all, of the circuit terminals ectuatedby one set of corresponding solenoids of different parts.

12. in combination with each unit of a plurelity of generating units, two solenoids in series circuit with said unit, a movable double contact terminal actuated by one of said so lenoids, a. movable single contact terminal actuated by the other solenoid and disposed in proximity to both contacts of said first nmncd tern'iinal, a motor controlling said unit and in circuit with said terminals and constructed to rotate in one direction or the ti in accordance es circuit is established between one or the other contact of said double contact terminal and said single contact terminal, and means for mechanically con ting the several double contact terminals 01 diil'erent pairs ol solenoids.

'13, Two generating units C, F, a pair of solenoids A, B, in series circuit with unit G, a oi solenoids E, l in series circuit with unit ll, two pivoted levers 6 vibrated by solenoids B, E, n'eaus *l'or mechanically connecting;

two or more oi" said lovers 6, contact 9:, 10 carried by each of said lovers pivoted overs 3 vibrated by solenoids rl), c, circuit terminal ll carried by each of l the terminals 11 being disposed he teuninals 9, 10, a motor in cir he circuit terminals 9, 10, ll assosolenoids A, B, and controlling unit (I, and as motor in circuit With circuit termiuels 9, 10, ll, associated. with solenoids 7*, E, and controlling unit F.

he circuit terminals 9, 10, 1'1, assoc ".h solenoids A, B, and controlling unit and e motor in circuit with circuit termiiuils 9, l0, 1 l associated with solei'ioids cud controlling unit in testmwny whereof I have alhxed my signature in presence ot two witnesses.

SEVEHN D. SPRUNG.

l'l itncsses:

5 sun .Snnmmu, J12, iinu'rnonn T. Pon'rnu.

IlO 

